{"id":"CVE-2026-97593","published":"2026-09-25T11:17:10.547","lastModified":"2026-09-25T11:17:10.547","description":"In the Linux kernel, the following vulnerability has been resolved:\n\niommu/s390: Fix NULL dereference in iova_to_phys() with ZPCI_TABLE_TYPE_RFX\n\nWhen using a 5-level translation table via ZPCI_TABLE_TYPE_RFX\nget_rso_from_iova() returns NULL when the region-first entry is invalid.\nYet in get_rto_from_iova() the region-second origin rso is not checked\nto be non-NULL before accessing rso[rsx] leading to a NULL pointer\ndereference instead of a NULL return when iova_to_phys() is called on\na unmapped IOVA. Fix this by adding the missing NULL check.","cvssScore":null,"cvssSeverity":null,"cvssVector":null,"cwes":[],"vendors":[],"products":[],"references":[{"url":"https://git.kernel.org/stable/c/20db6573301e66cd65ebf6c130b6563c69374d9d","tags":[]},{"url":"https://git.kernel.org/stable/c/41b5e0ce6801bf04d8fd3bca46e8c393349ebd5c","tags":[]},{"url":"https://git.kernel.org/stable/c/d0502ed0a1aae97e2ab7a21545903ba612d9f02e","tags":[]}],"exploitRefs":[],"hasPoc":false,"ai":null}